21120100202200 has 48 divisors (see below), whose sum is σ = 49318662042000. Its totient is φ = 8411149057920.

The previous prime is 21120100202177. The next prime is 21120100202203. The reversal of 21120100202200 is 220200102112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120100202203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230522980 + ... + 230614579.

It is an arithmetic number, because the mean of its divisors is an integer number (1027472125875).

Almost surely, 2^{21120100202200} is an apocalyptic number.

21120100202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120100202200 is an abundant number, since it is smaller than the sum of its proper divisors (28198561839800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21120100202200 is a wasteful number, since it uses less digits than its factorization.

21120100202200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461137804 (or 461137795 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21120100202200 its reverse (220200102112), we get a palindrome (21340300304312).

The spelling of 21120100202200 in words is "twenty-one trillion, one hundred twenty billion, one hundred million, two hundred two thousand, two hundred".